2006-03-28_PWETC_AgendaPacket - Laserfiche WebLink

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As redevelopment continues in Roseville, we expect overall consumption to increase. We also expect that residential per capita consumption to decrease offsetting some of the increased demand. Overall demand increase should not be a significant number as Roseville is fully developed. Water demand by customer category is shown in Table 1-2. Residential use accounted for 53.32% of total use in 1994. Commercial/industrial use was 32.16% with the remainder being institutional government, and city use as well as loss due to water breaks, etc. The City will begin tracking these figures more accurately in the future. Table 1-3 summarizes Roseville's largest volume water customers. Advanced Circuits is a very significant customer using 7.78% of all water pumped in 1994. Unisys has since moved most of its operations out of Roseville, but their former space is being occupied by similar light manufacturing companies. Current seasonal and peak demand is illustrated in Table 1-4. Most seasonal increase during the summer months is due to non-essential summer uses such as lawn watering. Record peak demand for 1 month occurred in July 1989, at 10.21 MGD. 1-day peak demand was 18 MGD. SECTION B. Treatment and Storage Capacity As Roseville is a wholesale treated water customer of the City of St. Paul, we do not own any water treatment facilities. We pump directly from St. Paul's 30 MG Dale Street reservoir. The storage capacity that is within Roseville's distribution system is 1.5 million gallon elevated storage tower on Fairview Avenue, just north of Rosedale Shopping Center. The St. Paul Dale Street reservoir could be considered as part of Roseville's storage capacity in that it is available on demand to our pumping station. The pumping station has a capacity in excess of 25,000 GPM with 2 variable frequency drive pumps and 4 additional on-demand single speed pumps to keep supply even with demand. SECTION C. Source of Water Supply All water is purchased as treated water from St. Paul Water Utility As stated in their water conservation and emergency preparedness plan, their source is a combination of surface and ground waters. The St. Paul Water Utility has owned and maintained a reservoir in Roseville for 110 years. It has a capacity of 30 million gallons. Roseville's contract with the utility allows for on-demand pumping from their reservoir up to 28 MGD. I would refer this section to the St. Paul Water Utility plan for further details. Page 4 of 22